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5547 Acadiau (1980 LE1)
Classification: Main-belt Asteroid          SPK-ID: 2005547
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1238190034924603 4.4508e-08  
a 2.615091566591955 1.0384e-08 au
q 2.291293534775002 1.1394e-07 au
i 12.72136359779419 4.5167e-06 deg
node 240.5416329867959 1.8732e-05 deg
peri 337.2257900429692 2.4651e-05 deg
M 193.0547222314785 1.7648e-05 deg
tp 2459716.809012449692
(2022-May-17.30901245)
7.7342e-05 TDB
period 1544.645334859014
4.23
9.1998e-06
2.519e-08
d
yr
n .2330632099651916 1.3881e-09 deg/d
Q 2.938889598408907 1.1669e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2564  
   data-arc span      14753 days (40.39 yr)  
   first obs. used      1980-06-10  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42031  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:42:39  

Additional Information
 Earth MOID = 1.28745 au 
 Jupiter MOID = 2.07484 au 
 T_jup = 3.362 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.4   n/a MPO358684  
diameter diameter 9.177 km 0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.642 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Ditteon, R.; Lin, W; Sheerin, M. (2019) Minor Planet Bull. 46, 275-276.]
geometric albedo albedo 0.231   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

5547 Acadiau (1980 LE1)          Discovered 1980-Jun-11 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1980 LE1 = 1984 JW = 1990 VQ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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